Life on the Line

Main Role

• 
  Joe Ma

  Mak Joi Tin

  Main Role
• 
  Matthew Ho

  Cheuk Ga Kit

  Main Role
• 
  Moon Lau

  Cheung Ho Yan / "Tanya"

  Main Role
• 
  Jeannie Chan

  Ho Moon Yuet

  Main Role
• 
  Kelly Cheung

  Man Fai

  Main Role

Support Role

• 
  Joey Law

  Tam Ka Jun

  Support Role
• 
  Ali Lee

  Cheung Wai Sum / Ah Sum [Joi Tin's dead wife]

  Support Role
• 
  Willie Wai

  Go Hun Yan / Yan Gor [Joi Tin's subordinate]

  Support Role
• 
  Li Shing Cheong

  Cheuk Kau / Kau Suk [Ga Kit's father]

  Support Role
• 
  Pinky Cheung

  Mak Oi Fa / Cheng Gu Ma / "Diana" [Joi Tin's older sister]

  Support Role
• 
  Jimmy Au

  Wong Hoi

  Support Role
• 
  Timothy Cheng

  Ying Fung

  Support Role
• 
  Leo Tsang Support Role
• 
  Bob Cheung

  Lui Kim Hung / Hung Che / Ah Dai

  Support Role
• 
  Arnold Kwok

  Luk Ho / "Edwin"

  Support Role
• 
  Ngai Wai Man Support Role
• 
  Cheung Sze Yan Support Role
• 
  Lee Hoi Sang Support Role
• 
  Cecilia So Support Role
• 
  Mandy Lam Support Role
• 
  Dolby Kwan Support Role
• 
  Chan Wing Chun Support Role
• 
  Savio Tsang Support Role
• 
  Bianca Chan

  Mak Lok Yee [Joi Tin and Wai Sum's daughter]

  Support Role
• 
  Susan Tse

  Cham Siu Dip / Tam Tai

  Support Role
• 
  William Chak Support Role
• 
  Marcus Kwok

  Ching Wong

  Support Role
• 
  Cayley Mak Support Role
• 
  Jones Lee Support Role
• 
  Dickson Wong Support Role
• 
  Athena Ng Support Role
• 
  Amigo Choi Support Role
• 
  Esther Wan Support Role
• 
  Pauline Chow Support Role
• 
  Calvin Chan Support Role
• 
  Kitterick Yiu

  Jack

  Support Role
• 
  Terence Tung Support Role
• 
  Kimmi Tsui Support Role
• 
  Helena Law Support Role
• 
  Leo Lee Support Role
• 
  Adrien Yau Support Role
• 
  Tony Yee Support Role
• 
  Glen Lee Support Role
• 
  Alan Tam Support Role
• 
  Burmie Wong Support Role
• 
  Akai Lee Support Role
• 
  Kings Wong Support Role
• 
  Ng Pui Yu

  Ho Ching Yi

  Support Role
• 
  Doris Chow Support Role
• 
  Au Hin Wai

  Medical student Lo

  Support Role
• 
  Lucas Yiu Support Role
• 
  Tony Chui Support Role
• 
  Jonathan Lee Support Role
• 
  Billy Cheung Support Role
• 
  Cheng Ka Sang Support Role
• 
  Willie Lau Support Role
• 
  Chan Min Leung Support Role

Guest Role

• 
  Kiko Leung

  [Receptionist] (Ep. 24)

  Guest Role
• 
  Kalok Chow

  [Football team member] (Ep.4)

  Guest Role
• 
  Janice Shum

  [Hung's 3rd sister]

  Guest Role
• 
  Sunny Dia

  James (Ep. 17)

  Guest Role
• 
  Leonard Cheng

  (Ep. 4)

  Guest Role
• 
  Thomas Ng Guest Role
• 
  Li Wai Kin Guest Role
• 
  Bryan Cheng Guest Role
• 
  Deborah Poon

  (Ep. 16)

  Guest Role
• 
  Siu Lai Man Guest Role
• 
  Lo Jun Fung

  Mr. Chan (Ep. 3)

  Guest Role
• 
  Fanny Lee Guest Role
• 
  Alycia Chan Guest Role
• 
  Helen Seng

  Mary (Ep. 12)

  Guest Role
• 
  Jason Sze

  [Rescue student] (Ep. 21)

  Guest Role

Unknown

• 
  Joe Yau Unknown
• 
  Leo Kwan Unknown
• 
  Kinlas Chan Unknown
• 
  Jan Tse Unknown
• 
  Gladys Li

  River

  Unknown
• 
  Marco Lee Unknown
• 
  Andy Wong Unknown
• 
  Helen Ng Unknown
• 
  Jason Cheng Unknown
• 
  Jenny Wong Unknown
• 
  Edsel Chiu Unknown
• 
  Joey Miu Unknown
• 
  Matthew Chu

  Kelvin

  Unknown
• 
  Sophie Yip Unknown
• 
  Wu Fei

  (Ep. 9)

  Unknown

Bit part

• 
  Jim Tang Bit part